Mailing list - A discussion group, generally about a specific topic, where readers post and read messages via email.

 Mambo - An open source content management system. The website for Mambo can be found here: http://www.mamboserver.com/

marquee - An HTML tag, which is not part of the HTML specification, that creates scrolling text.

MD5 - A hashing algorithm that is used to convert a message into a unique string of digits.

Media streaming - A method of transmitting media, such as audio and video clips, across the internet without requiring the entire file to download before the file can be played. The file is played as it arrives on the user's computer.

Megabyte - A unit of computer storage equal to 1024 kilobytes or 1,048,576 bytes.

Merchant account - A service provided by a financial institution that allows a website to process credit card orders.

Message board - An application for the web that allows users to post and read messages about a particular topic.

Meta tag - An HTML tag placed in the head section of an HTML document that allows the author to give information about the document. The most common uses are specifying a description and keywords for a document.

MIME - Multipurpose Internet Mail Extensions.

Mime types - Identifies the format of a file.

Mirror - An exact duplicate of a website. A mirror is commonly used to make file downloads more reliable by giving multiple locations from which users can download.

Mod rewrite - An Apache module that allows URLs to be rewritten according to rules specified in a .htaccess file. It is most commonly used to rewrite dynamic URLs to make them more search engine friendly.

Mod(ification) - A plugin for a script, such as Mambo or phpBB, that extends the functionality of that script.

Mozilla - The organization that produces the Mozilla suite of applications as well as Firefox (a browser) and Thunderbird (an email client).

MX entry or MX record - A DNS entry that specifies which mail server handles the mail for a domain.

MySQL - A free, open source database that is commonly used to run dynamic websites.

Name Server - A computer (server) that has both the software and the data (zone files) needed to resolve domain names to Internet Protocol (IP) numbers. Domain names must be programmed into a minimum of two name servers hosted on separate networks.

Netscape - A widely known company that developed the Netscape Navigater web browser, for viewing web pages.

ODBC - Short for Open DataBase Connectivity. ODBC is a common framework for accessing and altering the contents of databases.

OpenPGP Keys - OpenPGP is a tool for secure online communication. It’s a non-proprietary protocol used to encrypt email using public key cryptography. OpenPGP is based on PGP. cPanel utilizes GnuPG (Gnu Privacy Guard) for its public-key cryptography.

Open source - refers to a program in which the source code is available to the general public for use and/or modification from its original design free of charge.

Opera - Another popular web browser. http://www.opera.com/

Ownership - The state of being an owner. In web-hosting terms, this usually refers to the permissions set for directories and files for your website.

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